A bullet of mass travelling at penetrates an initially stationary block of wood and…

PHYSICS · Subjective · CBSE · Physics · Laws of Motion · Laws of Motion

Problem

A bullet of mass

25\text{ g}

travelling at

120\text{ m/s}

penetrates an initially stationary

1.5\text{ kg}

block of wood and emerges with speed

85\text{ m/s}

. If the block is on a frictionless surface, use conservation of momentum to calculate its speed immediately after the bullet emerges.